@import "https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&display=swap";:root{--primary:#3b82f6;--accent:#8b5cf6;--bg-dark:#020617;--glass:#ffffff08;--glass-border:#ffffff14}*{box-sizing:border-box;-webkit-font-smoothing:antialiased}body{background-color:var(--bg-dark);color:#f1f5f9;min-height:100vh;margin:0;font-family:Plus Jakarta Sans,sans-serif;overflow-x:hidden}.bg-scene{z-index:-1;background:radial-gradient(circle,#1e1b4b 0%,#020617 100%);position:fixed;inset:0}.spotlight{pointer-events:none;will-change:transform;background:radial-gradient(circle,#3b82f626 0%,#0000 70%);border-radius:50%;width:600px;height:600px;transition:transform .1s ease-out;position:absolute}header{z-index:100;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-bottom:1px solid var(--glass-border);background:#020617b3;justify-content:space-between;align-items:center;padding:1rem 2rem;display:flex;position:sticky;top:0}.logo-text{background:linear-gradient(90deg,#fff,#94a3b8);-webkit-text-fill-color:transparent;-webkit-background-clip:text;font-size:1.2rem;font-weight:800}.filter-nav{scrollbar-width:none;gap:.75rem;padding:1rem 2rem;display:flex;overflow-x:auto}.filter-nav::-webkit-scrollbar{display:none}.filter-chip{border:1px solid var(--glass-border);background:var(--glass);color:#94a3b8;cursor:pointer;white-space:nowrap;border-radius:100px;padding:8px 18px;font-size:13px;font-weight:600;transition:all .3s}.filter-chip.active{color:#000;background:#fff;border-color:#fff;box-shadow:0 0 20px #fff3}.hero{text-align:center;padding:60px 20px}.title-gradient{background:linear-gradient(to bottom right,#fff 30%,#3b82f6);-webkit-text-fill-color:transparent;-webkit-background-clip:text;margin:0;font-size:clamp(2.5rem,8vw,4.5rem);font-weight:800;line-height:1.1}.search-wrapper{max-width:600px;margin:40px auto;position:relative}.search-input{background:var(--glass);border:1px solid var(--glass-border);color:#fff;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-radius:16px;width:100%;padding:16px 24px;font-size:1.1rem;transition:all .3s}.search-input:focus{border-color:var(--primary);background:#ffffff0f;outline:none;box-shadow:0 0 40px #3b82f633}.content-container{max-width:1200px;margin:0 auto;padding:0 20px 100px}.grade-label{align-items:center;gap:1rem;margin:40px 0 20px;font-size:1.5rem;font-weight:700;display:flex}.grade-label:after{content:"";background:linear-gradient(to right,var(--glass-border),transparent);flex-grow:1;height:1px}.card-grid{grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:20px;display:grid}.glass-card{background:var(--glass);border:1px solid var(--glass-border);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-radius:24px;padding:24px;transition:all .4s cubic-bezier(.175,.885,.32,1.275)}.glass-card:hover{background:#ffffff0d;border-color:#fff3;transform:translateY(-8px)}.subject-title{color:var(--primary);margin:0 0 20px;font-size:1.2rem;font-weight:700}.file-row{border-bottom:1px solid #ffffff0d;justify-content:space-between;align-items:center;padding:12px 0;display:flex}.file-row:last-child{border-bottom:none}.badge{color:#94a3b8;text-transform:uppercase;background:#1e293b;border-radius:4px;padding:2px 6px;font-size:10px;font-weight:800}.download-link{color:#fff;background:#ffffff0d;border-radius:8px;padding:6px 12px;font-size:.8rem;font-weight:700;text-decoration:none;transition:all .2s}.download-link:hover{color:#000;background:#fff}@media (max-width:768px){header{padding:1rem}.title-gradient{font-size:2.5rem}.card-grid{grid-template-columns:1fr}}